16 wk Marathon Training Plan/ Boston qualifier - sub 3:15

This plan has the goal of a sub 3:15 marathon ( Men's 40-44 Boston qualifying time)
In order to start this plan you should be running at least 25 miles a wk with long run at 6 miles or more.
You should be an approximate 20:30 min 5K runner and 42 min 10K runner.